"Limited supplies of five rare-earth minerals pose a threat to increasing use of clean-energy technologies such as wind turbines and solar panels, a U.S. Energy Department report found."
>The substances -- dysprosium, terbium, europium, neodymium and yttrium -- face potential shortages until 2015, according to the report, which reiterates concerns identified a year ago.
So, it's past 2015, apparently these shortages didn't materialize.
Source is from 2012: http://www.bloomberg.com/news/articles/2012-01-05/five-rare-...